Machine for beating and polishing sh eet-m etal tubing



(No Model.)

W. G. CASE MAUHINE EOE BEATING AND POLISHING SHEET METAL TUBING. No. 408,736. Patented May 21 1889.

1/5572 asses N. PETERS. Phoio-Liuwgrapher. Washington, a Q

UNITED STATES PATENT OFFICE.

XVIIITNEY G. CASE, OF BUFFALO, NEIV YORK.

MACHINE FOR BEATING AND POLISHING SHEET-METAL TUBING.

SPECIFICATION forming part of Letters Patent No. 403,736, dated May 21, 1889.

Application filed April 9, 1888. Serial No. 270,036. (No model.)

1 0 all whom it may concern.-

Be it known that I, \VHITNEY G. CASE, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Machines for Beating and Polishing Sheet Metal, of which the following is a specification.

This invention relates to a machine which is more especially designed for beating and polishing sheet metal tubing. Heretofore these operations have been generally performed by hand; but this practice is obj ectionable, as itinvolves much labor and expense. The object of my invention is to construct a simple and inexpensive machine whereby copper or other sheet-metal tubes or cylinders can be beaten and polished with less labor and at smaller cost than heretofore.

The invention consists of the improvements which will be herein after fully described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view of my improved machine. Fig. 2 is a vertical sectional elevation of the hammer-head and a cross-section of the movable supportingbar on an enlarged scale. Fig. 3 is a central vertical section of the detachable truck on an enlarged scale. Fig. a is a perspective view of one of the clamps whereby the sheet-metal cylinder or other article is secured to the supporting-bar.

Like letters of reference refer to like parts in the several figures.

A represents a power-hammer of any suitable or well-known construction, and which is operated in any suitable manner. In the construction shown in the drawings the parts of the hammer are secured to an upright post, A.

B is the helve, and O the hammer-head, which is provided in its under side with a socket or recess, in which the die 0 is removably secured by a set-screw or otherwise.

D represents a supporting-bar arranged below the hammer-head C, and upon which the tube or cylinder to be polished is held under the hammer. The barD consists,preferably, of an ordinary railway-rail, and is supported upon trucks E E, which run upon tracks f, so that the bar, with the copper or other sheetmetal tube or cylinder, can be moved back and forth under the ham mer-head to beat and polish the entirelength of the cylinder. The

trucks E E are both composed of triangular frames of wrought-iron, which are provided with wheels or rollers 6, running upon the tracks f. The truck E is rigidly secured to one end of the bar D bybolts or rivets, while the truck E is detachably secured to the opposite end of the bar, so that it can be removed therefrom to permit the sheet-m etal cylinder to be slipped over the bar or be removed therefrom. The detachable truck E is provided at its upper end with a loop, g,which embraces the bar and is secured thereto by a set-screw, g, bearing against the upper surface of the bar. The frame of the detachable truck E is provided with an inclined brace, h, which is secured with its lower end to the lower portion of the truek-frame and with its upper end to a loop, h, which embraces the bar D. This loop is provided with a S61ISOI'6W,7L2, whereby it is secured to the bar D. The fixed truck E is provided with an inclined brace, 71. which is secured with its ends respectively to the bar D and the lower portion of the truckframe. The heads of the set-screws g h2 are provided with horizontal openings, through which passes a locking-bar, '1', whereby these set-screws are held against turning after be ing tightened.

J represents clamps attached to the bar D, and whereby the cylinder or other object is securely held upon the bar. These clamps each consist of a lever, j, pivoted to a loop, Zr, which surrounds the bar, and is provided at one end with a curved jaw or head, Z, bearing upon the cylinder, and at its opposite end with a cam-lever, Z, which bears against the upper side of the bar. Upon depressing the ca1n-lever Z the jaw Z is caused to clamp the cylinder upon the bar. The loops 7c are secured to the bar by set-screws which bear againstthe under side of the bar.

M represents weights which are suspended from the bar D by means of chains m, loosely surrounding the cylinder or the bar. These weights tend to retain the trucks E E upon the tracks f and prevent the same from j umping or vibrating violently under the blows of the hammer. Two of these weights are preferably employed, one at each end of the cylinder.

In applying the sheetmetal cylinder to the bar the truck E is detached from the bar by ICO I ished.

loosening theset-screws g W, and the cylinder is then passed over the free end of the bar, when the truck is again secured in place. The cylinder is then secured to the bar by the clamps J and the chains m are passed over the ends of the cylinder. By moving the bar back and forth under the hammer and turning the cylinder from time to time to present fresh surfaces to the hammer the entire surface of the cylinder is rapidly beaten and pol- It is obvious that both trucks E E may be made detachable, if desired.

By myimproved machine sheet-metal tubes or cylinders are beaten and polished more evenly and uniformly than by hand, and a considerable saving of time and expense is effected.

I claim as my invention- 1. Thecombination, with a power-hammer, of a movable supporting-bar arranged below said hammer, a truck rigidly secured to one. end of the bar, and a truck detachably arranged at the opposite end of the bar, substantially as set forth.

2. The combination, with a power-hammer, of a movable supporting-bar arranged below said hammer, a truck, E, rigidly secured to one end of said bar, and a detachable truck, E, arranged at the opposite end of the bar and provided with a loop embracing the bar, and a set-screw' whereby the loop is secured to the bar, substantially as set forth.

3. The combination, With a power-hammer and a movable supporting-bar provided at one end with a fixed truck,of a detachable truck, E, arranged at the opposite end of the bar and provided With a loop, g, having a set-screw, g, and a brace, it, having a loop, h, and setscrewh substantially as s'etforth.

4. The combination, with a power-hammer, of a movable supporting-bar provided at one end with a fixed truck, a detachable truck, E, arranged at the opposite end of the bar and provided with a loop, g, having a setscrew, g, a brace, h, having a loop, h, and set-screw 7L2, and a locking-bani, whereby the set-screws g and 72 are held againstturning, substantially as set forth.

WVitness my hand this 18th day of January,

WHITNEY G. CASE. Witnesses:

JNo. J. BONNER, FRED. C. GEYER. 

